Prepare more egg shells, then grind them into oil bottles and barrels, then add hot water and shake them vigorously. After a few minutes, the oil in it will come down, and then rinse it.

Method 2:

Prepare some fine sand and baking soda, put them into oil bottles and oil drums at the same time, add hot water, shake them vigorously for a while, and then rinse them off.

Method 3:

Pour a little dishwashing detergent into the oil bottle and barrel, then pour it into boiling water for a while, shake it a few times and rinse it off. If there is no accumulated oil in the container, this can be done.

Oil drums, that is, oil drums, are usually made of iron or plastic and are cylindrical. They were first invented by the Germans on the eve of World War II. They are mainly used to carry important military materials-gasoline, which can be said to be a typical product of war.